Controlling Virtual Keyboard using eye signals

Hello everyone,

I want to make a virtual keyboard that can be controlled using eye signals.
In the virtual keyboard, there will be a cursor that can move upward, downward, left, and right depending on the eye movements. and it will be clicked when eyes blink.

I have searched for the example of the virtual keyboard in Labview, but almost all the programs using buttons for the program. So when the signals come, the button will be clicked directly.
How to make the virtual keyboard that has a cursor which can move?

I haven't made the vi because I don't know how to do it. But here I attached the example of the virtual keyboard that i want to make.

Thank you.

Regards

Jenni